Amphibians and Reptiles of the Sierra El Tigre Region, Sonora, Mexico

The northeastern corner of Sonora, Mexico, is lightly populated and contains some spectacular natural landscapes. Among its gems is Sierra El Tigre, a large and high mountain range surrounded on three sides by the Río Bavispe. The range is part of the Sky Islands, also known as the Madrean Archipelago for its relation to Mexico’s Sierra Madre Occidental. The herpetofauna of Sierra El Tigre region has never been described previously but early collecting efforts there have played an important part in the understanding and conservation of amphibians and reptiles in Sonora and Arizona.